Answer:
dopamine
Explanation:When you take a substance your releseses dopamine and over time you need more stimulant to keep your brain satisfied hope this helps god bless
Answer:
Viruses are <u>non - living things</u> that can only survive and reproduce by infecting living cells.
<u>Host</u> is an organism that shelters and nourishes others.
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C. When there is an equal number of molecules on each side
Answer:
Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms. There are two main types of chemical bonds that hold atoms together: covalent and ionic/electrovalent bonds. Atoms that share electrons in a chemical bond have covalent bonds.
